I like over the top like in No More Heroes, but a fixed combat system since God Hand's is broken (seriously, during some of the arena matches, the dodge is useless, the item rate for any item is insanely low, and they REALLY should have made it so that a full tension bar is used up, not used until the original first bar is depleted, and then stops, leaving you with a chunk of tension left, and they REALLY needed to have included a way to recharge your Roulette Orbs without having to use freaking items ><). Ninja Gaiden moves well, and everything is placed where it should be, but the battle system is just messed up. Ninja Gaiden and God Hand have a habit of placing a lot (as in, a minimum of 6 hulking beasts) of enemies in front of you, each one with insane health and the ability to dodge in the blink of an eye and expect you to get through them when you can only attack one target at a time and enemies attacking you from behind. No More Heroes has it so that you have attacks that have a wide range, only stick about 3-5 enemies at a time, some requiring a bit more skill to kill while the others aren't too much of a huge threat. That is a system I like, but it need special attacks (or something somewhat more uber, like if instead of what the Roulette System does, you can only use the special attacks with a full whatever meter).
Pretty much take what's good about No More Heroes, what's good about God Hand, mix the two together, and tweak it so that the game is hard, but allows the use of an ace up your sleeve to get you out of the rock hard moments, and that to me is the very definition of a perfect game.